Steamdeck crash and reboots instant

Big problem… I try playing my ps5 by streaming via Chiaki. Sometimes it works for good time but most often when I start chiklaki and I connect to my ps5 and I am 5 min in a game the complete steamdeck restarts!! Wt….. how is dit possible After restart I can starting up again and some time play for longer time. What is wrong? What to do? Have good internet wifi. Ps5 by Ethernet, LCD steamdeck. Please help me